Sit-ups are a classic core-strengthening exercise, great for working the abdominal muscles near the surface of your torso.

You don’t crunches, sit-ups and planks to increase your core strength and definition, just take this 12-move standing ...

Place your hands by your temples, with your elbows pointing out to the side. Lift your left knee, and at the same time, bend ...

Often people find when they do a sit-up is that the initial lift hurts, but then the exercise becomes far easier, this is simply because the stomach muscles are not being used any more.

Half sit up Sit up straight with your knees bent and ... Tip: Move your feet closer to your body to make the exercise easier or hold a dumbbell or medicine ball for extra intensity.